This thread also highlights why there are so many wonderful little gadgets you can buy on line, but can't find at a local camera store (if you still have one in your locale).
Technically, the poster received what was ordered. It does indeed fit a Leica mount lens to a K body. And since it cost very little, there's little point in sending it back. If you found one at your local store, you'd be back a few days later saying "hey, this adapter you sold me doesn't allow focus past a few millimeters. It's useless to me."
I notice there's a lot of stuff like that out there, that promises some utility that is really impossible to deliver - or has a really limited application. In this instance, putting a Leica thread enlarging lens onto a K bellows makes for a pretty nifty super macro outfit. But I would wager most get sold to those hoping to fit a vintage lens onto a modern body and focus all the way to infinity.
There's a reason the local camera store doesn't stock all this weird and wacky stuff you can readily find online. It would take only a few minutes in the store to realize it didn't deliver, and you wouldn't buy it. But a few clicks of a mouse and a couple of weeks shipping, and you're stuck with it.
And let's not get started on inexpensive flash units that look just like the expensive ones, and have all kinds of buttons that aren't hooked up to anything.